In testing the effect of noise on task performance, Ernie tests half of the participants in a cool, loud room, and the other half in a hot, quiet room. Ernie’s failure to control the room temperature may result in a(n) _________.

A researcher in theory-testing mode focuses on ________, while a researcher in generalization mode focuses on ________. 

How does random assignment work in a repeated measures design?

In the case of a factorial design, another term for independent variable is _________.

Regression to the mean is problematic in which of the following situations?

Dr. Factors is conducting a 2 x 4 factorial design. How many factors are in his study?

What is the primary difference between independent-groups designs and within-groups designs?

Ray is comparing the heart rates of a group of former smokers to non-smokers after they have walked on a treadmill for 15 minutes. This is an example of a _________.

Which of the following studies would NOT have a possible threat of observer bias?

Which of the following is TRUE about within-groups designs?